However there will be probably hundreds of values with similar behavior. Everytime before a frame is emitted some bit has to change 01 as the wait condition in the EE thread (probably somewhere in VU0) is satisfied. However the issue can be in the VU component or one of the components feeding it. Then the origin for the EE wait is probably known. At least some asymmetry should appear (Asymmetry can also occur due to the different use of VU0/1). Accordingly case 1) should be faster than case 2). I think MTVU only separates VU1 but not VU0 and such it doesn't help when VU0 is blocking the emulation. If you want you can check whether there is a difference betweenĪpparently VU cycle stealing does something to the process so one of both VU components have an issue.
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